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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef UI_GL_GL_CONTEXT_CGL_H_
      6 #define UI_GL_GL_CONTEXT_CGL_H_
      7 
      8 #include <OpenGL/CGLTypes.h>
      9 
     10 #include "ui/gl/gl_context.h"
     11 
     12 namespace gfx {
     13 
     14 class GLSurface;
     15 
     16 // Encapsulates a CGL OpenGL context.
     17 class GLContextCGL : public GLContextReal {
     18  public:
     19   explicit GLContextCGL(GLShareGroup* share_group);
     20 
     21   // Implement GLContext.
     22   virtual bool Initialize(GLSurface* compatible_surface,
     23                           GpuPreference gpu_preference) OVERRIDE;
     24   virtual void Destroy() OVERRIDE;
     25   virtual bool MakeCurrent(GLSurface* surface) OVERRIDE;
     26   virtual void ReleaseCurrent(GLSurface* surface) OVERRIDE;
     27   virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
     28   virtual void* GetHandle() OVERRIDE;
     29   virtual void SetSwapInterval(int interval) OVERRIDE;
     30   virtual bool GetTotalGpuMemory(size_t* bytes) OVERRIDE;
     31   virtual void SetSafeToForceGpuSwitch() OVERRIDE;
     32 
     33  protected:
     34   virtual ~GLContextCGL();
     35 
     36  private:
     37   GpuPreference GetGpuPreference();
     38 
     39   void* context_;
     40   GpuPreference gpu_preference_;
     41 
     42   CGLPixelFormatObj discrete_pixelformat_;
     43 
     44   int screen_;
     45   int renderer_id_;
     46   bool safe_to_force_gpu_switch_;
     47 
     48   DISALLOW_COPY_AND_ASSIGN(GLContextCGL);
     49 };
     50 
     51 }  // namespace gfx
     52 
     53 #endif  // UI_GL_GL_CONTEXT_CGL_H_
     54